I would appreciate confirmation on the answer I found digging through T-SQL's documentation.
I have a stored procedure that references a view twice. Once in the procedure and then a second time when ...

During my cursory research I have not been able to find a definitive answer on the benefits that SELECT INTO OUTFILE provides over INSERT INTO ... SELECT. Upon reading the docs related to INSERT INTO ...

I was reading about InnoDB's isolation levels and it makes sense for the most part, but what I don't get is why are unrepeatable reads a bad thing? Shouldn't it be the other way around?
For examples:
...

I'm new to MySQL's LOCK and TRANSACTION and have a question about different isolation levels of a transaction:
Given two transactions executing the same code (auto-commit is false):
(1) get data of ...

I have a lot of threads that writing to DB some data in two tables. tbl_raw_data and tbl_parsed_data where tbl_parsed_data have foreign key to tbl_raw_data.
I also need the writing to be superfast.
...

What are the considerations when using SERIALIZABLE isolation level over the default READ COMMITTED in an Oracle database?
Given the concurrency system used within Oracle (using transaction logs to ...

AFAIK running transactions as READ UNCOMMITTED means that there is no lock, so every change caused by a transaction is immediately visible to other transactions.
Is it correct to assume that this is ...

In my application I have to perform a distributed locking pattern. Because we already have an instance of SQL Server to use, we decided that it would be easiest to implement the locking at SQL layer ...

We have a highly transactional application. We have a requirment to upload huge data into our database that can happen for a duration of 5-10 minutes. During our upload time, the tables are getting ...

I think read somewhere that it was possible to configure a Postgresql database to force all transactions to be SERIALIZABLE, but I can't find that document anymore.
In fact, I would like to force the ...

I need execute un update statement over an sql server table, this table is used by another process at the same time. because that sometimes deadlocks ocurs.
wich Isolation Level do you recomend for L1 ...

I have a client-server app running in Windows Server 2008R2 using/interacting SQL Server 2012.
After reading app's documentation as well as feedbacks on internet from those who already accomplished ...

When using a database server for monetary/financial data, I can only assume that using transactions is mandatory.
But what I am not sure is which is usually the isolation level? Is a READ-REPEATABLE ...

I currently have the following stored procedure. However I am seeing some race conditions where I end up with incorrect data which I think is caused because the procedure isn't attomic and it can be ...

I need to get the MAX aggregate of certain field in a transaction. I use this value further inside the transaction. I want to avoid inserts in the entire table from which I'm getting the MAX while the ...

Most of the forum and example online always suggest to have both ALLOW_SNAPSHOT_ISOLATION and READ_COMMITTED_SNAPSHOT set to ON whenever someone is asking snapshot, row versioning or similar question. ...

Assume a SQLCmd session which is using transaction isolation level REPEATABLE READ.
In this session I start a transaction and execute an UPDATE statement with a WHERE clause on a non indexed column. ...

Assume a SQLCmd session which is using transaction isolation level REPEATABLE READ.
In this session I start a transaction and execute an UPDATE statement with a WHERE clause on a non indexed column. ...

As I am working on the project which has SQL SERVER as a database....I'm maintaining isolation level in my project where I enabled snapshot isolation level for my project....
As I have to make some ...

I seem to be getting a lot of deadlocks when doing select count(*) on a particular table.
I have already changed all the required parameters and made them into row only locking.
I've also changed the ...

Preface
Our application runs several threads that execute DELETE queries in parallel. The queries affect isolated data, i.e. there should be no possibility that concurrent DELETE occurs on the same ...

Here's one for the SQL Server gurus: if I set my SQL Server 2008 transaction isolation level to READ UNCOMMITTED, does that also affect the index pages?
E.g. using ISOLATION LEVEL READ UNCOMMITTED, ...